![Phenolphthalein and Ortho-Tolidine Combination Kit](http://medtechforensics.com/cdn/shop/products/unnamed_c412aa0f-6e0d-47a6-8c7c-c0553ed3b800_{width}x.jpg?v=1590108719)
Phenolphthalein and Ortho-Tolidine Combination Kit
SKU: 1206Many investigators use the combination of these two tests as a presumptive test and confirmatory test for the presence of blood. This kit is packaged in a plastic box containing all the premixed chemicals and supplies required to conduct both the Phenolphthalein Presumptive Blood Test and the O-Tolidine Test.
The premixed liquid reagents are in plastic dropper bottles. A non-human known blood standard is included to monitor the results.